皮皮学，免费搜题
登录
搜题
【判断题】
变压器只能改变电压,而不能改变交流电的频率。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】对重要事项或重大行动作出安排，应使用的文种是：
【单选题】—Drinking tea is a common practice in daily life, isn’t it? —Yes, teahouses continue to __________up in and around the city of Nanjing.
A.
spring
B.
split
C.
break
D.
cut
【单选题】Everyone is working harder, and living a happier life now, ______?
A.
isn't one
B.
aren't we
C.
isn't it
D.
aren't they
【单选题】It may be a piece of ____ to learn to drive an automobile but many new drivers are afraid to drive on crowded city streets until they have more experience.
A.
paper
B.
tolerance
C.
book
D.
cake
【单选题】Money is important in my life, but it isn’t_______ to me.
A.
everything
B.
something
C.
nothing
D.
anything
【简答题】某英国进口商达成了一笔大豆交易，合同约定3个月后支付300万美元，为防止汇率波动进口商将如何操作？结果如何？如果签订贸易合同时，即期汇率GBP1=USD1.8000，3个月后的即期汇率为GBP=USD1.7800，3个月的远期汇率为GBP=USD1.7880。
相关题目：